Author: Baader, J.E.
Paper Title Page
WEPAB126 Pulsed Wire Magnetic Field Measurement System for Short-Period Long Undulators 2903
 
  • J.E. Baader, S. Casalbuoni
    EuXFEL, Schenefeld, Germany
  
  The pulsed wire method is an at­trac­tive op­tion to mea­sure the mag­netic field in in­ser­tion de­vices, mainly for those with re­stricted ac­cess (e.g., small gaps, in-vac­uum/cryo­genic en­vi­ron­ments, etc.). Be­sides first and sec­ond field in­te­grals, ex­per­i­ments have proved the fea­si­bil­ity of re­con­struct­ing the mag­netic field pro­file. Un­du­la­tors with a small gap and short pe­riod are - and are planned to be - used at dif­frac­tion-lim­ited stor­age rings and free-elec­tron lasers. This con­tri­bu­tion out­lines the pulsed wire sys­tem’s re­quire­ments to per­form mag­netic field re­con­struc­tion in such un­du­la­tors. We ex­am­ine the main ex­pected lim­i­ta­tions, par­tic­u­larly the dis­per­sive, fi­nite pulse-width, dis­cretiza­tion error, and sag ef­fects. Fur­ther­more, we pre­sent the cur­rent sta­tus of de­vel­op­ing the pulsed wire sys­tem at the Eu­ro­pean XFEL.  
poster icon Poster WEPAB126 [1.184 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB126  
About • paper received ※ 19 May 2021       paper accepted ※ 07 July 2021       issue date ※ 19 August 2021  
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WEPAB132 Towards a Superconducting Undulator Afterburner for the European XFEL 2921
 
  • S. Casalbuoni, J.E. Baader, G. Geloni, V. Grattoni, D. La Civita, C. Lechner, B. Marchetti, S. Serkez, H. Sinn
    EuXFEL, Schenefeld, Germany
  • W. Decking, L. Lilje, S. Liu, T. Wohlenberg, I. Zagorodnov
    DESY, Hamburg, Germany
  
  We pro­pose to de­velop, char­ac­ter­ize and op­er­ate a su­per­con­duct­ing un­du­la­tor (SCU) af­ter­burner con­sist­ing of 5 un­du­la­tor mod­ules (1 mod­ule = 2 times SCU coil of 2 m length and 1 phase shifter) at the SASE2 hard X-ray beam­line of Eu­ro­pean XFEL. This af­ter­burner has the po­ten­tial to pro­duce an out­put of more than 1010 ph/pulse at pho­ton en­er­gies above 30 keV. The pro­ject is di­vided into the pro­duc­tion of a pre-se­ries pro­to­type mod­ule and a small-se­ries pro­duc­tion of 5 mod­ules. Cen­tral goals of this R&D ac­tiv­ity are: the demon­stra­tion of the func­tion­al­ity of SCUs at an X-ray FEL, the set up of the needed in­fra­struc­ture to char­ac­ter­ize and op­er­ate SCUs, the in­dus­tri­al­iza­tion of such un­du­la­tors, and the re­duc­tion of the price per mod­ule. In this con­tri­bu­tion, the main pa­ra­me­ters and spec­i­fi­ca­tions of the pre-se­ries pro­to­type mod­ule (S-PRESSO) are de­scribed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB132  
About • paper received ※ 15 May 2021       paper accepted ※ 05 July 2021       issue date ※ 14 August 2021  
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THPAB036 Superconducting Phase Shifter Design for the Afterburner at the European XFEL 3823
 
  • V. Grattoni, J.E. Baader, S. Casalbuoni
    EuXFEL, Schenefeld, Germany
  
  At the Eu­ro­pean XFEL, a su­per­con­duct­ing af­ter­burner is under de­sign for the SASE2 hard X-ray beam­line. It will con­sist of 5 un­du­la­tor mod­ules. One mod­ule cor­re­sponds to two su­per­con­duct­ing un­du­la­tor (SCU) coils of 2 m length plus one phase shifter. Such an af­ter­burner will en­able pho­ton en­er­gies above 30 keV. Su­per­con­duct­ing (SC) phase shifters will be in­stalled in each un­du­la­tor mod­ule to keep the cor­rect phase delay be­tween the elec­tron beam and pho­ton beam. In this con­tri­bu­tion, we pre­sent the re­quired SC phase shifter pa­ra­me­ters to en­able op­er­a­tion in the elec­tron beam en­ergy range 11.5-17.5 GeV. We also an­a­lyze dif­fer­ent mag­netic de­signs sat­is­fy­ing the cal­cu­lated spec­i­fi­ca­tions.  
poster icon Poster THPAB036 [0.991 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB036  
About • paper received ※ 18 May 2021       paper accepted ※ 06 July 2021       issue date ※ 12 August 2021  
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